Home / 145,108.08-200,248.56-81,446.40

Finding the Fourth Proportional to 145,108.08, 200,248.56 and 81,446.40

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Solution

The fourth proportional to 145,108.08, 200,248.56 and 81,446.40 is: 112,395.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,108.08 : 200,248.56 = 81,446.40 : x
  2. Step 2: Convert to fraction form
    145,108.08/200,248.56 = 81,446.40/x
  3. Step 3: Cross multiply
    145,108.08x = 200,248.56 × 81,446.40
  4. Step 4: Simplify right side
    145,108.08x = 16,309,524,317.18
  5. Step 5: Solve for x
    x = 16,309,524,317.18/145,108.08
  6. Step 6: Final answer
    x = 112,395.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.